#pragma once
#include "bieuthuc.h"

class BieuThucTong :
	public BieuThuc
{
private :
	BieuThuc * m_u;
	BieuThuc * m_v;
	
public:
	BieuThuc& khoitao(float *x,int i);
	string bieuDien();
	string bieuDienDaoHam();
	float tinhGiaTri(float x);
	float tinhDaoHam(float x);
	BieuThucTong();
	BieuThucTong(BieuThuc*,BieuThuc*);
	~BieuThucTong();
};
